Deck the halls with poison ivy, fa la la la la, la la la la. 'Tis the season to be slimy, fa la la la la, la la la la. Wait, that's not how it goes! But for this Halloween season, it's perfect. Deck your halls with creepy crawlers and conjure up some crazy concoctions that your friends will be dying to sink their teeth into. Here are some great Halloween DIYs that will make your house the eeriest on the block.